John James Openshaw, MD
Infectious Disease Physician · Palo Alto, CA
John James Openshaw, MD is an infectious disease physician with a practice address in Palo Alto, California, and NPI 1679720460, issued on Aug 22, 2008. Check the license (California A109301, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John James Openshaw
- Credential
- MD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License numbers
- A109301 CA
042.0016401 VT
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Palo Alto, CA 94305
- Phone
- (650) 723-4000
- Enumerated
- Aug 22, 2008
- Record last updated
- Aug 6, 2024
- Medicare enrollment
- Enrolled (PECOS I20160125002657); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 2008
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 300 Pasteur Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Aderinsola Aderonmu, MSStudent in an Organized Health Care Education/Training Program1083301196
- Akuvi Claude Adossou, MDStudent in an Organized Health Care Education/Training Program1093394504
- Reena Agrawal, MDPhysical Medicine & Rehabilitation Physician1720257520
Verify John James Openshaw in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A109301Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average infectious disease physician in 2024
19 Medicare Part D claims, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
One hospital affiliation
- Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
John James Openshaw among 1,119 infectious disease physician records in California
John James Openshaw, MD is one of 1,119 infectious disease physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 59% of them.
- NPI issued2008 · 59% of these records are older, 34% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2008 · median 2003 among the 735 with a school on file
- Record last updated2024 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in California
There are 1,119 infectious disease physician records in California.
All 1,119 in California → Every provider in Palo Alto → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Eran Bendavid, MDStanford, CA 943051144330069
- Brian Blackburn, MDStanford, CA 943051861542680
- Catherine Blish, MDStanford, CA 943051710067285
- Hector Bonilla, MDStanford, CA 943051225115371
- Philip Grant, MDStanford, CA 943051205949070
- Michael Harbour, MDStanford, CA 943051013022169
- Dora Ho, MDStanford, CA 943051619032224
- Shanthi Kappagoda, M.D.Stanford, CA 943051720195381
Common questions
What is John James Openshaw, MD's NPI number?
John James Openshaw, MD's National Provider Identifier (NPI) is 1679720460, issued on Aug 22, 2008. An NPI identifies a provider in billing; it is not a license.
Where is John James Openshaw, MD located?
The NPPES record lists a practice address at 300 Pasteur Dr, Palo Alto, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.
How can I verify John James Openshaw, MD's license?
NPPES lists California license number A109301, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John James Openshaw, MD prescribe under Medicare Part D?
In 2024, John James Openshaw, MD had 19 Medicare Part D claims; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.